Atomistic study of nanotwins in NiTi shape memory alloys

Y Zhong, K Gall, T Zhu - Journal of Applied Physics, 2011 - pubs.aip.org
Atomistic simulations are performed to study the structure and geometrical limit of nanoscale
twins in NiTi shape memory alloys. We analyze compound twins as narrow as∼ 1 nm …

Size-dependent martensitic transformation path causing atomic-scale twinning of nanocrystalline NiTi shape memory alloys

T Waitz, D Spišák, J Hafner, HP Karnthaler - Europhysics Letters, 2005 - iopscience.iop.org
Nanocrystalline NiTi alloys were processed by devitrification of an amorphous phase to
elucidate the impact of the nanocrystallinity on the thermally induced martensitic phase …

Size effects on martensitic phase transformations in nanocrystalline NiTi shape memory alloys

T Waitz, T Antretter, FD Fischer… - Materials Science …, 2008 - journals.sagepub.com
Results of a systematic study are presented to review various effects of crystal size on the
martensitic phase transformations in nanocrystalline NiTi shape memory alloys. The …

Structural transformations in NiTi shape memory alloy nanowires

R Mirzaeifar, K Gall, T Zhu, A Yavari… - Journal of Applied …, 2014 - pubs.aip.org
Martensitic phase transformation in bulk Nickle-Titanium (NiTi)—the most widely used shape
memory alloy—has been extensively studied in the past. However, the structures and …

Phase transformations, detwinning and superelasticity of shape-memory NiTi from MEAM with practical capability

M Muralles, SD Park, SY Kim, B Lee - Computational Materials Science, 2017 - Elsevier
We present a second nearest-neighbor interatomic potential improved with the mechanical
properties of the bulk B2 and B19'phases in shape-memory NiTi alloys. The potential …

Structural evolution during the cycling of NiTi shape memory alloys

J Hurley, AM Ortega, J Lechniak, K Gall… - International Journal of …, 2022 - degruyter.com
The structural evolution in NiTi shape memory alloys subjected to pseudoelastic cycling is
examined in the present study. Single crystals with [100] and [111] orientations were …

The effect of Ni content on phase transformation behavior of NiTi alloys: An atomistic modeling study

G Li, T Yu, N Zhang, M Chen - Computational Materials Science, 2022 - Elsevier
In this study, the thermodynamic behavior of single-and poly-crystalline NiTi shape memory
alloys (SMAs) with different Ni contents was investigated by molecular dynamics (MD) …

First-principles phonon-based model and theory of martensitic phase transformation in NiTi shape memory alloy

P Kumar, UV Waghmare - Materialia, 2020 - Elsevier
Remarkable shape memory property of Nitinol (NiTi) originates from a diffusion-free
reversible phase transition it exhibits upon cooling from the cubic austenite to a low …

A phase-field study of the martensitic detwinning in NiTi shape memory alloys under tension or compression

X Li, Y Su - Acta Mechanica, 2020 - Springer
The degree of shape recovery in shape memory alloys is highly associated with their
deformation due to martensitic detwinning. In this work, we studied the microstructural …

Quantitative phase analysis in microstructures which display multiple step martensitic transformations in Ni-rich NiTi shape memory alloys

J Khalil-Allafi, G Eggeler, WW Schmahl… - Materials Science and …, 2006 - Elsevier
In the present study, we investigate a microstructure which shows a three-step martensitic
transformation on cooling from the high temperature regime and two DSC peaks on heating …